Timing is everything for coding accuracy. Waiting for the pathologist to measure an excised lesion could cost your surgeon plenty. But not waiting for the pathology report could saddle the patient with a misdiagnosis. Use these tips to ensure correct diagnosis -- and maximize pay. Rule # 1 -- Measure First You should select the appropriate lesion excision size code based on the surgeon's report. "If the surgeon doesn't measure the lesion before he cuts it out, he's cutting his reimbursement in half," says John F. Bishop, PA-C, CPC, MS, CWS, president of Tampa, Fla.-based Bishop and Associates. Once the specimen is in the jar, the specimen shrinks down to half its original size, Bishop says. If the surgeon doesn't put the original size in the note, the coder has to code based on the smaller excision size listed in the pathology report. "That will cost the practice a lot of money," he points out. CPT's excision sizes, including margins, are based on the surgeon's measurements. "Train providers to measure an excision and document it with a statement, such as 'I'm going to excise this X cm length by X width lesion. I took 4 cm margins,'" Bishop says. Explain to your surgeon the financial impact of including these details. Add it up: Hold Diagnosis for Path Report You should always choose the malignant or benign excision code based on the results of the pathology report, even if the surgeon does not have that information at the time of surgery. The pathology report offers the definitive diagnosis that serves as the basis for the CPT excision code selection. A surgeon might visually identify a lesion as benign or malignant, but you still want to code the excision based on the pathology report. For malpractice reasons, the physician has to protect himself in the event a benign-appearing lesion really ends up being malignant, Bishop says. On the flip side, you don't want to mislabel the patient. The diagnosis could cause the patient's insurer to drop coverage. Proper protocol: Downplay concerns that patience could cause payment losses. "Sitting and waiting for three to four days for the path report does not change cash flow," assures Bishop. Check Anatomic Location After receiving the pathology report, review the documentation for excision size and location. "Then it's all about location from the anatomical site to make sure the practice is getting all revenue," Bishop notes. Each anatomical group contains lesion excision sizes ranging from small to large lesions. CPT groups lesion excision codes into three anatomical groups shown in the table. Example: Forgetting to give the surgeon credit for the margins would reduce the code to 11441 (... excised diameter 0.6 to 1.0 cm). This would cost the practice approximately $54 (Code 11441 pays $153.76 for non-facility national amount using 36.8729 conversion factor).